<template>
    <div class="login_container">
        <el-row>
            <el-col :span="12" :xs="0"></el-col>
            <el-col :span="12" :xs="24">
                <el-form class="login_form" :model="loginForm" :rules="rules" ref="loginForms">
                    <h1>Hello</h1>
                    <h2>欢迎来到硅谷甄选</h2>
                    <el-form-item prop="username">
                        <el-input :prefix-icon="User" v-model="loginForm.username"></el-input>
                    </el-form-item>
                    <el-form-item prop="password">
                        <el-input type="password" :prefix-icon="Lock" v-model="loginForm.password" show-password ></el-input>
                    </el-form-item>
                    <el-form-item>
                        <el-button type="primary" size="default" class="login_btn" @click="login" :loading="loading">登录</el-button>
                    </el-form-item>
                </el-form>
            </el-col>
        </el-row>
    </div>
</template>
<script setup lang="ts">
import {User,Lock} from '@element-plus/icons-vue';
//收集账号和密码数据
import { reactive ,ref} from 'vue';
//引入用户相关的小仓库
import useUserStore from '../../store/modules/user';

import { ElMessage, ElNotification } from 'element-plus';
import { getTime } from '../../utils/time';

import { useRouter,useRoute } from 'vue-router';
let route=useRoute();

let useStore=useUserStore();
//自定义变量控制按钮加载效果
let loading=ref(false);

//获取el-form组件
let loginForms=ref();



//获取路由器
let $router=useRouter();



let loginForm=reactive({
    username: 'admin',
    password: '111111'
})

//登录按钮的回调
const login=async ()=>{

    //保障全部表单项校验通过再发请求
    await loginForms.value.validate();



    //开始加载
    loading.value=true;



    //发登录请求
    //请求成功，跳转到首页
    //请求失败，登录失败

    try{
        await useStore.userLogin(loginForm);
        let redirect:any=route.query.redirect;
        //跳转到首页
        $router.push({
            path: redirect||'/'
        });
        ElNotification({
            type: 'success',
            message: '欢迎回来',
            title: 'HI，'+getTime()+'好'
        })
        loading.value=false;
    }
    catch(error)
    {
        //登录失败，加载效果消失
        loading.value=false;
        ElNotification({
            type: 'error',
            message: "服务器错误"
        })
    }
    
}


//自定义校验规则方法
const validatorUserName=(rule:any,value:any,callback: any)=>{
    //rule:即为数组的校验规则对象
    //value: 即为表单元素的文本内容
    //函数：如果符合条件callback方行通过
    //如果不符合条件调用callback方法，注入错误的提示信息
    if(value.length>=5){
        callback();
    }
    else{
        callback(new Error('账号长度至少五位'))
    }
}


const validatorPassWord=(rule:any,value:any,callback: any)=>{
    if(value.length>=6){
        callback();
    }
    else{
        callback(new Error('密码长度至少六位'))
    }

}



//定义表单校验需要配置对象
const rules=reactive({
    username: [
        // {required:true, min: 5, max: 10, message: '账号长度在5到10位之间', trigger: 'blur' },
        {trigger: 'change',validator:validatorUserName}
    ],
    password: [
        // {required:true, min: 6, max: 15, message: '密码长度在5到16位之间', trigger: 'change' },
        {trigger: 'change',validator:validatorPassWord}
    ],
})




</script>
<style scoped lang="scss">
.login_container{
    width: 100%;
    height: 100vh;
    background: url("../../assets/images/background.jpg") no-repeat;
    background-size: cover;
    .login_form{
        position: relative;
        width: 80%;
        top: 30vh;
        background: url("../../assets/images/login_form.png") no-repeat;
        background-size: cover;
        padding: 40px;
        h1{
            color: white;
            font-size: 40px;
        }
        h2{
            font-size: 20px;
            color: white;
            margin: 20px 0;
        }
        .login_btn{
            width: 100%;

        }
    }
}


</style>